Improvement in stereoscope-instruments



duits-1I giant parte can.

Letters Patent N 91,997, dated June 29, 11869.

IMPROVEMENT IN STEREOSCOPE-INSTRUMZEIN TS.

Y The Schedule referred to in these Letters Patent and making part of the same.

To all 'whom it lmay co'nccrn Be it known that I, JOHN FRANCIS ADAMS, of New York, nl the county ot' New York, and State of' N ew York, have invented a new and useful Improvement in Stereoscopes; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable'others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part otfthis specilication.

This invention relates to new and important improvements in instruments used in viewing stereoscopic or photographic pictures; and

It consists mainly in the use ot' magnets for receiving aml holding the pictures in the proper position for being viewed.

1t also consists in binding the ends of thc card-pictures, or views,.\\ith ironorother suitable material, to he acted upon by the magnets, and in the method ofdelivering a. single card', or picture, to the magnets,` and discharging' it therefrom, by which arrangement any desired number ot' cards, or pictures, may be received and discharged from a revolving cylinder, as will be hereinafter more fully described.

In the accompanying sheet otdrawings Figure l represents a vertical section of the instrument, through the line x x ot' tig. 2.

liigure 2 is a side elevation, partly in section, or with the upper portion broken away to show the method of detaching a. single picture from the bottom ofthe pack ot' pictures.

Figure 3 represents a side view of the detachingbutton, enlarged.

Figure 4 is an edge view of' the same.

Figure 5 gives an edge view ot' a. picture, showing the binding on its ends, t'or receiving the magnets.

Similar letters of reference indicate corresponding parts.

A represents the box or case, which contains the cylinder, the ends ot' which support the cylindeupivots, as seen in dotted lilies in tig. 2.

1S I5 represent hand-wheels, cranks, or crosses on the pivots tor turningthe cylinder.

C is the cylinder, formed by connecting two principal heads I) l), by two or more cross-pieces E, which support a central head or partition, F.

The pivots, upon which the cylinder revolves, are secured to the heads I), andthe cross-pieces 1G are screwed to the heads, as seen in the dra-wing.

Upon the inner sides ot`each ot' the heads D, magnets G are placed, one or more in number, according to the diamter ot' the cylinder or the number of pictures or views which it may be desired to exhibit at each revolution Of the cylinder.v

In this example ot' my invention, I place two mag'- nets on each head, with their faces tlush, or about flush with the edge or periphery of the heads, anl pointing in opposite directions, as seen iu tig. l, where the magnets are shown in dotted lines.

The heads may be octagons, or made inany other desired shape. In the drawing they are oct'agonai.

Tile upper portion of the case A is made so as to enclose more or less cani-pictures, as represented at H H, the pictures being shown in red color.

I I, iig. 2, represent transversely-placed pieces,

,which are secured in grooves, so that they may be readily removed, upon the under sides of which are the detaching-lmttons J J, secured to the pieces I by central pivot-screws, as seen in tig. 3.

rlhese buttons are formed ot four (more or less) wings kk', so connected together that the pairs do not revolve in the same plane, but so that while the pic-v tures are supported by two wings ot' one pair, (as, for

instance, one ot' the wings otfeach blltto'n marked'k',)

one of each ot' the wings marked k revolves in a. plane the thickness ot a. card higher, so that they pass over and detach the lower card, being placed and revolved at each end ot the pack, as seen in iig. 2. Two cards are thus detached at every revolution of the buttons, and the buttons are so arranged, in relaltion .to the magnets, that when a. picture is so detached, it drops square on to the magnets, which hold it by means of the binding m, on the ends seen in tio'. 5

lhis binding on'the ends ofthe picture is attracted by the magnets, and held by such attraction with suf'- ticient force to keepthe picture in place on the cylinder while the latter is revolved, or being carried to.

the proper position or focus for viewing.

After the picture has been viewed, the cylinder is turned a. part ot' a. revolution, or until the picture is carried down beneath the cylinder, where it strikes a trap or plate, n, which stops its further progress. 'lhe motion ot' the'cylinder being continued, it slides from the magnets, and drops into a drawer or box beneath.

The manner in which tle detaching-buttons J are revolved is by means ofthe projecting wires U, in the heads I), which are placed opposite the magnets, on the same side ot' the cylinder, as seen in the drawing.

These wires engage with' the wings of the button, so thateach pair ot' wires on each head turns the button oue-tourth of a revolution.

While the buttons arel turned-so that the lower card or picture is detached or separated from the rest, they are also turned, so that the pack of pictures above is supported by them, as stated above.

l represents the lenses.

In operating with the instrument, the pictures are placed loosely in a pack, so that they rest upon thev buttons J, as represented in the drawin".

rlhe cylinder is then revolved by means ot' the v cranks or wheels B. When themagnets of one side of the cylinder point upward, a. picture is dropped by Vthe revolution ofthe buttons, or mther by n. half revolutionibr each picture, which is caught by the niagnets, and held until it is carried, by the continued motion of' the cylinder, into the proper focus.

Then viewed sufficiently, the cylinder is carried around until the other pair of magnets points up, :tnother .picture is dropped-and caught, when, by the continued revolution of the cylinder, the first picture is discharged bythe trap n, and the next carried into focus, and so on for any number of pictures, alnount' 1. In combination with a. stereoscope, the use of magnets, substantially as and for the purposes herein shown and described.

2. The metallic binding m, or its equivalent, on the ends of stereoscopic or photographie pictures, substantially and for the purposes described.

3. The buttons J, in combination with a stereoscope for delivering the pictures singly from the pack, when constructed, revolved, and operating substantially as described, for the purposes set forth.

4. The method ot' discharging the pictures from tlc magnets, substantially as described.

The above specitcation of my invention signed by me, this 8th day of March, 1869.

J OHN F. ADAMS.

XVitnesses 

